Their ability to accept programming in ladder diagram format is one of the reasons for the success of programmable logic controllers (PLCs) in the industry. The many similarities between the ladder ...

This class explains how basic ladder diagram programming is used to program PLCs. It examines the basic rules that are used to construct a ladder diagram program, including Boolean logic functions. It ...

This class explains how ladder diagram programming is used to program timers and counters. It examines the basic rules for each type of timer and counter used in LAD programming for S7-1200 PLCs.